Hoisting mechanism



Oct. 9, 1928.

M. P. HOLMES HOISIING MECHANISM Filed Jan. 27. 1922 Patented Oct. 9,1928,

UNITED STATES 1,686,971. PATENT OFFICE.

uoimrs r. nomns, or cnannmonn'nnw nam snma nssrenon 'ro sunnivnn MA-cnmnmr oonronarron, A. CORPORATION or massacnosnr'rs.

norsrrne mnommsm.

A pndaaon filed January 27, 1922. Serial n. 532,338.

My invention relates to hoisting mechanisms, and more particularly tohoisting mechanisms of the portable type.

An object of my invention is to provide an improved hoistmg mechanism.Another object of my invention is to provide an 1mroved hoistingmechanism havlng improved riving mechanism which may be either of thesteam or air turbine variety. A further object of my invention is toprovide an 1mproved turbine drive particularly adapted for incorporationin a hoisting mechanism. Other objects and advanta es of my inventionwill hereinafter more fully appear. In the accompanying drawings I haveshown for purposes of illustration one form which my invention mayassume in practice.

In these'drawings,-

Fig. 1 is a central vertical section, partially in elevation, through aholsting mechanism constructed in accordance with one illustrativeembodiment of my invention.

Fig. 2 is a transverse section on the line 22 of Fig. 1.

Fig. 3 is a developed section on the line 33 of Fig. 2.

In the embodiment of my invention which I have elected to describe andshow for purposes of illustration, there is provided a hollow drum 1closed at its opposite ends by plates 2 and 3, which plates are providedwith projecting stub shafts 4 and 5 respec tively. The stub shaft 4 isjournaled in a bearing 6 in the upper end of a hanger 7 and this hangeris herein formed integral with a base 8. At the other end of the base 8is formed a second hanger 9 which provides a bearing 10 for a collar 11formed upon a member 12, which will be later more fully described.Within the collar 11 in suitable bearings 13 the shaft 5 is journaled.

\Vithin the drum is arranged an improved drum driving mechanism which Ishall now describe. The drum 1 is cut away at one side to permit theinsertion therein of a plate member 14, which plate member-*is providedwith radially projecting flanges or plates 15 and 16, in each of which aseries of intermediate direction reversing ports -17 and 18 are formed.Other structural features of the members 15 and 16 will be describedhereafter. Journaled in the end plate 2 and in a partition plate 20, bymeans of-suitable bearings 21 and 22, is a shaft 23 upon Which there aremounted a series of, herein, three wheels 24, 25 and 26, which wheelscarry sets of blades 27, 28 and 29, respectively. Projecting from theend plate 2 is a nozzle member 30 Which is arranged to discharge to thefirst series of blades 27. After the operating fluid at a high velocitypasses through the blades 27, it is intercepted by and has its directionreversed in the intermediate ports 17. After this, it passes through theblades 28 upon the wheel 25 and thereafter has its direction of flowonce more reversed by the intermediate ports 18 before passing throughand acting upon the blades 29.npon the wheel 26. The exhaust fluid isled away by longitudinally extendingpassages 31. Herein no effort hasbeen made. to display the precise shapes of the blades and ports asthese will of course vary dependent upon the type of turbine selected,etc. v Further, although but one nozzle and one set of intermediatereversing ports has been shown, as being sufiicient for purposes ofillustration, it will be obvious that two sets arranged diametricallyopposite each other might very properly be used and would gccuratelybalance the operation of the tur- For the purpose of obtainingadditional starting torque, I have provided means for supplying fluiddirectly to the second and third stages, this. means including nozzles33 and 34 formed in the intermediate members 15 and 16, and fluid issupplied to these nozzles by passages 35 and 36, indicated bydotted'lines, leading from a chamber 37 in the end late 2. v

For t e purpose of supplying pressure fluid to the nozzles 30, 33 and34, a connection 38 is led from a suitable source of fluid underpressure and then into a chamber 39 which is arranged in alincment withthe axis of the drum. A passage 40 formed in a sleeve-like member '41extends into a bore 42 formed in the end plate 2. Within the pas: sage40 a valve 43 is reciprocable, this valve having a ring 44 thereon andan end seating portion 45 adapted to cooperate with a. seat 46 formed atthe inner end of the passage. 40. Spaced annular rows of ports 47 and 48lead through the wall of the sleeve 41 and communicate with an annularpassage 49 which leads by a passage 50 to the nozzle 30. A passage 51,shown in dotted lines because it'is on the side toward the observer ofthe section in Figure 1, leads to the chamber 37.

trol the movement of the valve and a suitable segment rack and latchwill be used to enable positive holding of the valve 43 in full closedposition, whenever a supplemental throttle upon the line 38 is not used.

The mode of operation of the fluid supply means will be readilyapparent. When the valve 43 is moved toward the left by pulling upon thelever 53 in a left hand direction, fluid entering from the passage 38and chamber 39 will :pass through the passage 40 through'the Forts 47and 'into the annular passage 49. through the passage 50 to the nozzle30 and in part will return through the ports 48 to pass by the thenunseated end seating por- 'tion 45 0f the valve 43 and so by way ofpassage 51 to chamber 37, and through passages 35 and 36 tonozzles 33and 34. Vi hen the motor has come up to speed, the lever 53 may be movedto the right, causing the portion 45 of the valve 43 to seat upon theseat 46; and thereafter fluid will be supplied only to the nozzle 30.

For the purpose of effecting a' reduction of the high speed of rotationof the turbine to' a suitable speed of rotation for a drum, thefollowing illustrative form of reduction gearing may beemployed. Theshaft 23 is provided with a spur gear 55 at one end thereof meshing withan internal gear 56 which is secured to a shaft 5 8 rotatably mounted inbearings in a suitable bracket 57 carried by the end plate 3. .Theinternal gear 56 is secured to the shaft 58 which extends through thebracket 57 and the shaft 58 is also provided at its opposite endwith, asmall pinion 59 which meshes with a larger pinion 60 mounted upon ashaft 61 which in turn passes through the end plate 3 and carries uponits outer end a pinion 62. The pinion 62 drives a driving gear 63 whichis journaled upon a stud or stub shaft 64 secured to the end plate 3,and driving gear 63 intermeshes with an internal gear 65 formed upon acollar 66 secured to the member 12. The collar 66 is provided with abraking surface 67 with which a brake band 68 having suitable man-.

brake band 68 is applied and the brake band 71 released and that the.valve controlling lever 53 is moved to the left in Figure 1.

I Fluid will then be supplied, as previously described, both to thenozzle 30 and to the nozzles 33 and 34. Accordingly the wheels 24, 25and 26 will begin torevolve, turning in a counter-clockwise directionlooking athis fluid will then in part flow the hoisting mechanism fromthe right hand endthereof. As a result thepinion 55 will.

turn in a counter-clockwise direction, as will the internal ear 56 andtherefore also the pinion 59. Ks a result, the gear 60 will turn in theopposite direction, or clockwise viewed from the right hand end ofthehoist. The gear 62 will turn similarly; the driving gear 63'will turncounter-clockwise and, the internal gear 65 being held stationary. thedrum 1 will be caused to rotate in a clockwise direction. that thereaction of the fluid upon the intermediate plates 15 and 16 will tendto assist rptation of the drum. Thefluid, when its velocity has beenreduced by passage through the blading, will flow out throu h the seriesof exhaust ports 31 arranged about the periphery of the drum. When theband 68 is released and the band 71 applied, the drum 1 may beheld orretarded as desired while the turbine continues to run, the gear 65 thenbeing driven.

It will be obviousthat by suitable minor changes in design of the parts,the turbine may be driven either by steam or air-and that this turbinemay be of either the impulse, reaction, or combined impulse and reactiontype and that I have simply shown one form which it may assume in a,diagrammatic manner.

While I have in this application specifical turbine with its rotordisposed coaxial 'of said drum, and means movable with and extendinginto said drum for directing fluid flow to said turbine.

2. In a hoisting mechanism, a drum mounted for rotation, driving meansfor said drum including a turbine whose rotor lies within said drum androtates upon an axis coincident with that of said drum, a nozzle carriedby said drum, and a member adapted to directly-support said drum and toconduct fluid to said nozzle.

3, In a hoisting mechanism, a drum mounted for rotation, and drivingmeans therefor including a turbine the nozzle means of which is carriedby said drum and the rotor of which rotates upon an axis coincident withthe axis of said drum.

4. In a hoisting mechanism, a drum mounted for rotatlon and drivingmeans therefor including a turbine whose rotor includes a plurality ofmoving blade wheels It will therefore be seen rotatable upon an axiscoincident to the axis of rotation of said drum, and a nozzle and atleast one set of reverse blading secured to said drum.

5. In a hoisting mechanism, in combination, a drum mounted for rotationand driving means therefor includin a multistage turbine having a rotorrotata 1e on an arms coincident with the axis of said drum, reversingblading means secured to said drum, and reducing gearing connecting saidrotor and said drum to effect opposite rotation of said drum and saidrotor.

6. In a hoisting mechanism, a driven element mounted for rotation,driving means therefor including a multistage turbine hav-' ing a rotor,a shaft for supporting the same, means forsupplyingfluid directly tostages subsequent to the first stage during startin to increase thestarting torque thereof, an

means for controlling the supply of fluid to said turbine including amember supported b tlie first and subsequent stages of said turbine anda member normally occupying a position to prevent direct supply to saidlatter stages.

'7. In a hoisting mechanism, a drum, and

a. multistage turblne driving said drum andhavin relatively movable ements, said elements being supported by said drum, one of said elementsbeing adapted to direct fluid flow through said turbine. r

8. In a hoisting mechanism, a drum, and a multistage turbine havingrelatively movable elements, one of which directs fluid flow throughsaid turbine, one of said elements being directly connected to said drumand the other element being indirectly supported by said drum..

9. In a hoisting mechanism, adrum, a multistage turbine havingrelatively movableelements, which are supported by said drum, means forsupplying fluid to all of said stages during starting, and means forcutting out some of said stages after starting.

10. In a hoisting mechanism, a drum, a multistage turbine. havingrelatively movable elements, which are supported by said drum, means forsupplying fluid to all of said stages during starting, and means forcutting out some of said stages after starting while automaticallyretaining in o'peration the remaining stages.

said driven element to conduct fluid to 11. A mechanism comprising adrum, a driving motor therein, said drum having a ortion of itsperiphery which is removable or allowing access to said motor throughthe periphery of said drum, and a motor element carried by said portionand removable therewith through said periphery.

12. In a hoisting mechanism, a winding drum, a coaxial turbine thereinhaving coaxial relatively rotatable rotor and nozzlecarrying elements,means whereby one of said elements transmits power to said drum throughreduction gearing and means whereby the other element transmits powerdirectly to said drum.

13. In a hoisting mechanism, a drum, a coaxial multista e turbinetherein having relatively movable elements one of which is carried bysaid drum and directs fluid flow for said turbine, means for connectingthe other of said elements in driving relation to hold the samestationary to eiiect rotation of said drum.

15. A hoisting mechanism com rising a drum, a motor having a rotor sha textending therein, an ,end plate carried by said drum and, having abearin supporting bracket spaced inwardly there rom and carried thereby,and driving earing between said motor and drum inc uding a pinioncarried by said shaft, coaxial gears rotatabl supported by said bracketat opposite sides of the bearing thereon and at the same side of saidend plate, one of said gears meshing with said pinion, another set ofcoaxially disposed gears carried b and disposed on each side of said endp ate one of which meshes with the remaimng gear of the other set ofcoaxial gears, and operative connection between the other gear of saidother set and said drum.

In testimony whereof I afiix my signature.

MORRIS P. HOLMES;

